All Math Units

Unlock the complete collection of K–12 math units featuring engaging, standards-aligned lessons that build problem-solving, fluency, and real-world mathematical understanding.

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Grade 3 Math Units

Unit Plan 5 (Grade 3 Math): Properties of Operations—Strategy Builders

Build multiplication fact power by using commutative, associative, and distributive properties to turn hard facts into easier ones; model with arrays and area/tape diagrams to justify efficient strategies and solve real-world problems.

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Grade 3 Math Units

Unit Plan 4 (Grade 3 Math): Division as Equal Sharing & Grouping

Explore division through equal sharing and equal grouping; model with arrays, tape diagrams, and number lines; use inverse multiplication (unknown factor) to solve and justify answers.

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Grade 3 Math Units

Unit Plan 3 (Grade 3 Math): Arrays & Area Models—Structure of Multiplication

Use arrays and unit-square area models to build multiplication understanding, connect rows × columns to factors × product, and explore commutativity to choose the best representation for real-world problems.

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Grade 3 Math Units

Unit Plan 2 (Grade 3 Math): Equal Groups & Repeated Addition → Multiplication

Learn multiplication through equal groups, arrays, and number-line jumps—moving from skip-counting and repeated addition to writing equations with unknowns and choosing the best model to solve real-world problems.

Grade 3 Math Units

Unit Plan 1 (Grade 3 Math): Building Our Math Community & Problem-Solving Norms

Establish math community norms with journals, self-checking, and error analysis; explore equal groups and arrays to preview multiplication while reinforcing place-value language.

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Grade 4 Math Units

Unit Plan 36 (Grade 4 Math): Cumulative Synthesis & Exhibition

Show mastery across operations, place value, fractions, measurement, and geometry as students solve multi-step tasks, choose efficient strategies, model thinking clearly, and defend solutions with precise units and reasoning.

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Grade 4 Math Units

Unit Plan 35 (Grade 4 Math): Data & Geometry—Plots and Properties

Create and interpret line plots with fractional measurements; use fraction operations to answer questions and connect data to shape properties, including parallel/perpendicular lines, angle types, and symmetry.

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Grade 4 Math Units

Unit Plan 34 (Grade 4 Math): Geometry + Angles—Integrated Tasks

Draw and identify lines, rays, segments, and angle types; measure angles in degrees with a protractor; use angle addition and equations to find unknown angles in composed figures.

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Grade 4 Math Units

Unit Plan 33 (Grade 4 Math): Fractions & Decimals—Decision Making

Flex between fractions and decimals to compare, convert, and solve mixed problems; choose efficient forms, justify equivalence, and support comparisons with benchmarks, models, and place-value reasoning.

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Grade 4 Math Units

Unit Plan 32 (Grade 4 Math): Patterns & Multiplicative Thinking—Revisited

Generate and extend patterns; describe rules and features like growth and parity; distinguish additive vs. multiplicative patterns and model them with tables, equations, and real-world contexts.

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Grade 4 Math Units

Unit Plan 31 (Grade 4 Math): Multi-Digit Multiplication & Division—Applied

Solve multi-step word problems with multi-digit multiplication and division; use estimation to check reasonableness and interpret remainders based on context.

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Grade 4 Math Units

Unit Plan 30 (Grade 4 Math): Measurement Applications—Perimeter/Area/Conversions

Blend conversion tables with real-world area and perimeter tasks; keep units consistent, justify rounding, and show reasoning with labeled diagrams and checks for reasonableness.

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Grade 4 Math Units

Unit Plan 29 (Grade 4 Math): Symmetry—Lines that Balance

Identify and draw lines of symmetry in 2D figures; complete mirror images and justify decisions with folds, tracing, grids, and precise vocabulary.

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Grade 4 Math Units

Unit Plan 28 (Grade 4 Math): Classifying 2D Figures—Properties First

Classify 2D shapes by parallel/perpendicular lines and angle types; identify right triangles and describe quadrilateral properties using precise vocabulary, evidence, and models.

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Grade 4 Math Units

Unit Plan 27 (Grade 4 Math): Line Plots with Fractional Data

Make line plots with fractional units (½, ¼, ⅛) and solve plot-based problems using fraction addition, subtraction, and fraction-by-whole multiplication with accurate units and justification.

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Grade 4 Math Units

Unit Plan 26 (Grade 4 Math): Compare Decimals—Place-Value Reasoning

Compare decimals to hundredths using place-value reasoning; record with >, <, =; justify using models/number lines and the same-whole idea.

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Grade 4 Math Units

Unit Plan 25 (Grade 4 Math): Tenths and Hundredths—Making Equivalents

Rename tenths as hundredths (e.g., 3/10 = 30/100) to add tenths + hundredths accurately; justify with 10×10 grids/number lines while keeping the same whole.

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Grade 4 Math Units

Unit Plan 24 (Grade 4 Math): Decimals to Hundredths—Notation & Models

Express fractions with denominators 10 and 100 as decimals; model to hundredths on grids/number lines; explain equivalence (0.3 = 0.30 = 30/100) while maintaining a consistent whole.

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Grade 4 Math Units

Unit Plan 23 (Grade 4 Math): Multiply Fractions by Whole Numbers

Multiply fractions by whole numbers using models and equations; explain a/b × n = (n × a)/b; convert improper↔mixed; solve word problems with units and reasonableness checks.

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Grade 4 Math Units

Unit Plan 22 (Grade 4 Math): Add/Subtract Like Denominators

Add & subtract fractions/mixed numbers with like denominators; solve word problems using models, equations, regrouping, and units with clear reasoning and checks for reasonableness.

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Grade 4 Math Units

Unit Plan 21 (Grade 4 Math): Fractions as Sums—Decompose & Compose

Understand a/b as the sum of unit fractions 1/b; decompose and compose fractions and mixed numbers in multiple ways using visual models and equations to justify equivalence.

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Grade 4 Math Units

Unit Plan 20 (Grade 4 Math): Compare Fractions—Benchmarks & Strategies

Compare fractions with unlike numerators/denominators using benchmarks (0, 1/2, 1), common denominators, or common numerators; justify with models and record results using > < =.

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Grade 4 Math Units

Unit Plan 19 (Grade 4 Math): Fraction Equivalence—Why It Works

Explain and generate equivalent fractions using visual models and number lines, apply scale factors to numerator and denominator, and justify equivalence with same-whole reasoning and benchmarks.

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Grade 4 Math Units

Unit Plan 18 (Grade 4 Math): Mixed Operations—Reasonableness & Representation

Solve multi-step problems using all four operations; model with diagrams and equations; estimate and check answers for reasonableness while interpreting units and remainders in context.

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Grade 4 Math Units

Unit Plan 17 (Grade 4 Math): Division Fluency & Interpreting Remainders

Refine division strategies using partial quotients and area/array models, estimate to check quotients, and interpret remainders based on context to ensure clear, reasonable solutions.